Add no staff member found text

src/pages/AboutPage.tsx

@@ -9,7 +9,11 @@ import Page from './Page';
 
 const Members: React.FC<{ data: StaffResponse }> = ({ data }) => {
   if (data.length === 0) {
-    return <Typography>Nincs találat</Typography>;
+    return (
+      <Typography variant="h5" color="textPrimary">
+        Nincs találat!
+      </Typography>
+    );
   }
   return (
     <>